ALTHOX

Types of Abacus Russian Abacus Photo Source Wikimedia Commons License Public Domain There are many varieties of Abacus, in the case of the Russian abacus, not the exception. The Russian Abacus School (счёты), is characterized by a sloping roof, with 10 ovals or spheres or hemispheres like beads on each wire (execptuando a wire, the 4th. They usually do not have 10 but four pearls, beads or hemispheres wood. These four counts, hemispheres or wooden beads are used for fractional quarter rubles). Older models of Russians have another cable Abacus 4 quarter- kopeks accounts, which were minted until 1916. The Russian abacus is often used vertically, with wires or wires from left to right along the lines of a book. Wires, cables or threads usually tend to lean or accumulate on the top center of the abacus, to maintain the spheres, beads, beads or pearls, placed at either side. In the case of Russian Abacus, such a count, is cleared when all grains, beads, or b...